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Finding the Fourth Proportional to 51,391.50, 70,920.39 and 29,035.50

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Solution

The fourth proportional to 51,391.50, 70,920.39 and 29,035.50 is: 40,069.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,391.50 : 70,920.39 = 29,035.50 : x
  2. Step 2: Convert to fraction form
    51,391.50/70,920.39 = 29,035.50/x
  3. Step 3: Cross multiply
    51,391.50x = 70,920.39 × 29,035.50
  4. Step 4: Simplify right side
    51,391.50x = 2,059,208,983.85
  5. Step 5: Solve for x
    x = 2,059,208,983.85/51,391.50
  6. Step 6: Final answer
    x = 40,069.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.